Table 4

Statistical methods

BMJ

BJGP

Family Practice

Overall


Methods

n

(%)

n

(%)

n

(%)

n

(%)


No statistics or simple summaries

23

(29.1)

47

(32.4)

33

(40.7)

103

(33.8)

Chi-squared tests

13

(16.5)

40

(27.6)

19

(23.5)

72

(23.6)

t-tests

7

(8.9)

22

(15.2)

17

(21.0)

46

(15.1)

Logistic regression

14

(17.7)

19

(13.1)

11

(13.6)

44

(14.4)

Nonparametric

11

(13.9)

24

(16.6)

4

(4.9)

39

(12.8)

Odds ratios/relative risks

11

(13.9)

13

(9.0)

14

(17.3)

38

(12.5)

Regression

9

(11.4)

10

(6.9)

11

(13.6)

30

(9.8)

Sample size/power

6

(7.6)

17

(11.7)

3

(3.7)

26

(8.5)

Summaries with CIs

9

(11.4)

3

(2.1)

6

(7.4)

18

(5.9)

Kappa

2

(2.5)

9

(6.2)

4

(4.9)

15

(4.9)

Sensitivity/specificity

4

(5.1)

10

(6.9)

1

(1.2)

15

(4.9)

Pearson correlation

2

(2.5)

6

(4.1)

6

(7.4)

14

(4.6)

Multiple comparisons

2

(2.5)

4

(2.8)

4

(4.9)

10

(3.3)

ANOVA

5

(6.3)

4

(2.8)

9

(3.0)

Mantel-Haenszel

1

(1.3)

5

(3.4)

2

(2.5)

8

(2.6)

Random effects models

4

(5.1)

4

(2.8)

8

(2.6)

Cronbach's alpha

1

(1.3)

5

(3.4)

1

(1.2)

7

(2.3)

Fisher's exact test

7

(4.8)

7

(2.3)

Likelihood ratio

3

(3.8)

3

(2.1)

6

(2.0)

Survival analysis

6

(7.6)

6

(2.0)

Other

4

(5.1)

37

(25.2)

10

(12.3)

51

(16.7)

Total articles

79

145

81

305


Notes

CIs = confidence intervals.

ANOVA = analysis of variance.

Rigby et al. BMC Medical Research Methodology 2004 4:28   doi:10.1186/1471-2288-4-28

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